I am going to use this army for both casual and for a few tournaments (small between my group of friends). I hope that it can take on just about any type of opponent. It is my first foray into the world of 40k and I could use some advice. thanks in advance for any comments/criticism.

company command squad 125
lascannon
vox
camo cloaks
master of ordanance

1 platoon command squad 65
vox
power weapon
3 flamer
mb

3 infantary squads 240
commisar
power fist
mb
vox
3 hvy bolters

hvy weapons squad 75
autocannon

1 platoon command squad 120
vox
ala'rahem
3 flamer

2 infantary sq 170
commisar
power fist
mb
vox
2 flamers

special weapons squad 65
2 flamers
demo charge

veterans squad 155
3 meltaguns
chimera hvy flamer/hvy bolter

veterans squad 155
3 meltaguns
chimera hvy flamer/hvy bolter

scout sentinel 45
autocannon

scout sentinel 45
autocannon

5 rough riders 55

demolisher hvy flamer
hvy flamer sponsoons 185

I plan to deploy my normal platoon, command squad and demolisher to provide a base of fire. My veterans will go tank hunting, capture any objectives later in the game. Al'rahem's platoon will outflank and try and cause some carnage (lots of flamers). Rough riders are their to be used as a counter-attacking reserve. scout sentinels to try and get some shots at weaker side armour and as tar pits to tie-up close combat units. if anyone gets too close to my fire base 3 hvy flamers on the demolisher should help sort them out.